For those using the war patrol missions, some U-Boat like the IX B and C are missing the deck gun. IT’S NORMAL...or as designed could say Lurker.
In career mode, the player has the choice of the deck mount.
88mm, 105mm (when available)...or nothing!
It’s up to the player to choose the equipment in regard of what he may encounter!
In War Patrol mission, the game has just chosen « nothing » 
Other than that, i made numerous positions adjustments (crews, deck guns, antennas etc) witch will be available next update
